Treadle drive for electrified sewing machine

Abstract

A reverse treadling inhibiting device having an electric motor connected to a sewing machine arm shaft through a one-way clutch and inhibiting the reverse treadling of the sewing machine by utilizing the one-way clutch connection to the electric motor to add inertia and resistance to reverse treadling of the sewing machine.

I claim: 
     
       1. A sewing machine comprising a frame, an arm shaft journalled in said frame for rotation in a specific direction, a handwheel operatively secured to an end of said arm shaft, a pulley operatively associated with said handwheel for actuation by an external driving means for driving said sewing machine through said pulley, a one-way clutch supported on said arm shaft, a first drive transmission component operatively connected to said one-way clutch, an internal driving means supported in said frame, additional drive transmission components interconnecting said internal driving means and said first drive transmission component, whereby said internal driving means may rotate said arm shaft of said sewing machine in said specific direction through said one-way clutch and said external driving means may drive said arm shaft in said specific direction with a minimum of resistance and in an opposite direction with additional resistance occasioned by driving said internal driving means through said first drive transmission component and said additional drive transmission components interconnecting said internal driving means and said first drive transmission component. 
     
     
       2. A sewing machine comprising a frame, an arm shaft journalled in said frame for rotation in a specific direction, a one-way clutch supported on said arm shaft, a first pulley supported on said one-way clutch, an electrical actuating means supported in said frame, a second pulley supported and driven by said actuating means, a belt interconnecting said first and said second pulley, said actuating means driving said arm shaft in said specific direction through said one-way clutch, a handwheel operatively secured to an end of said arm shaft, a third pulley operatively associated with PG,9 said handwheel for actuation by an auxiliary driving means for driving said sewing machine through said third pulley, said auxiliary driving means driving said arm shaft in said specific direction with a minimum of resistance and in an opposite direction with additional resistance occasioned by driving said actuating means through said first and second pulley and said belt interconnecting said actuating means and one-way clutch. 
     
     
       3. A sewing machine as claimed in claim 2 wherein said first and second pulleys and said belt are releasably interengaged to preclude slippage of said belt on said pulleys.